SANYO TMPA 8823-5VA4 Diagram

TMPA 8823-5VA4 SERVICE MANUAL

CONTENT

(1) General-----------------------------------------------------------------------------1 (2) Frame Chart-------------------------------------------------------------------fig.1 (3) IC Function Introduction ------------------------------------------------------1

3.1 N501 TMPA8823-----------------------------------------------------2

3.2 N002 ST4053 ----------------------------------------------------------3

3.3 N301 LA78040 ------------------------------------------------------------4

3.4 N601 AN7522----------------------------------------------------------4

(4) I

(5) IC Voltage --------------------------------------------------------------8 (6) Trouble shorting------------------------------------------------------------------9

C Bus Control ------------------------------------------------------------------5

4.1 Menu Entry -------------------------------------------------5

4.2 Item Introduction -----------------------------------------------------------5

3360

(1) General

This chassis is consists of main IC TMPA8823-5VA4, ST4053. TMPA8823-5VA4 is an integrated circuit for a PAL TV. A MCU and a TV signal processor (SP) are integraed in a 64-pin shrink DIP package. The MCU contains 8-bit CPU,ROM,RAM,I/O ports,timer/counters, A/D converters,an on-screen display controller,remoter control interfaces,IIC bus interfaces. The TV signal processor contains PIF,SIF,Video,multi-standard chroma,Sync,RGB processors.

(2) Frame Chart (see fig.1)

→

TUNER TDL-3N1

AV/TV SWITCH ST4053

AUDIO POWER

AN7522

PIF/SIF R, G, B

VT/BL BH/RF AGC

TMPA 8823

CRT

OSCILLLLATION

2SC3619 X 3

V-OUT

LA78040

H-OUT

ST1803DF

+115V +25V +19V

SCAN

TRANSFORMER

24-

-4P

∽220V +13

ON/OFF POWER

C5299

fig.1

(3) IC Function Introduction

3.1 N501 TMPA8823-5VA4 Function: MCU and SP

Icon PIN Description

SDA2 1 IIC bus serial data input/output MUTE 2 Mute Output KEY 3 Key input DVSS 4 GND connection RESET 5 Reset signal input XOUT 6 8 MHz oscillator connection XIN 7 8 MHz oscillator connection TEST 8 GND connection DVDD 9 5V power supply VVSS 10 GND connection TV GND 11 GND terminal for Analog block FBP IN 12 Input terminal for FBP H.OUT 13 Horizontal driving pulse output H.AFC1 14 H AFC filter connection V.SAW 15 Terminal to be connected capacitor to generate V saw signal V.OUT 16 Vertical driving pulse output H.Vcc(9V) 17 Vcc terminal for DEF circuit NC 18 No use Cb in 19 Input terminal for Cb signal Y in 20 Input terminal for Y signal Cr in 21 Input terminal for Cr signal DIG GND 22 GND terminal for Digital block C in 23 Input terminal for Chroma signal V2 in 24 Input terminal for Video signal DIG Vdd 25 Vcc terminal for Digital block CW out 26 Output terminal for fsc wave signal ABCL in 27 Input terminal for ABL/ACL control EW out 28 Output terminal for east-west correction singal IF Vvv(9V) 29 Vcc terminal for IF circuit TV out 30 Detected PIF signal output terminal SIF out 31 Detected SIF signal output terminal DC NF 34 Terminal to be connected capacitor for DC Negative feedback PIF PLL 35 Loop filter for PIF PLL connection IF Vvv(5V) 36 Vcc terminal for IF circuit REG FIL 37 Terminal to be connected capacitor for stabilizing internal bias DE-EMP 38 Terminal to be connected capacitor for SIF Det De-Emphasis IF AGC 39 IF AGC filter connection IF GND 40 GND terminal for IF circuit

IF IN 41 Input terminals for IF signals IF IN 42 Input terminals for IF signals RF AGC 43 RF AGC control level output YC Vcc 44 Vcc terminal for Y/C circuit Vsm out 45 Output terminal for Vsm signal Black DET 46 Terminal to be connected with Black Det filter for black stretch APC Filter 47 Terminal to be connected with APC filter for Chroma demodulation IK IN 48 Sense ACB cathode current input RGB Vcc 49 Vcc terminal for RGB circuit R OUT 50 Output terminal for R signal G OUT 51 Output terminal for G signal B OUT 52 Output terminal for B signal TV GND 53 GND terminal for Analog block A GND 54 GND connection A VDD 55 5V power supply NC 56 SDA1 57 IIC bus serial data input/output SCL1 58 IIC bus serial clock input NC 59 VT 60 VT output SCL2 61 IIC bus serial clock input SYNC 62 Horizontal sync signal input REMOTE 63 Remote controller signal input POWER 64 Power control (On=Hi. Off=L)

3.2 N001\N002 ST4053 Function: I2C bus control , Audio/Video switching IC

Name Pin Function

RinV2 1 This pin is for input a right audio signal from an external source(V2 channel) RinV1 2 This pin is for input a right audio signal from an external source(V1 channel) VinV2 3 This pin is for input a composite video signal from an external source(V2 channel) Vout 4 This pin is for output main channel composite video signal. VinV1 5 This pin is for input a composite video signal from an external source(V1 channel) BAND1 6 This pin is for output band1 to control tuner. GND 7 This is the GND pin. GND 8 This is the GND pin. BAND2 9 This pin is for output band2 to control tuner. BAND2 10 This pin is for output band2 to control tuner. BAND2 11 This pin is for output band2 to control tuner. LinV1 12 This pin is for input a left audio signal from an external source(V1 channel) LinV2 13 This pin is for input a left audio signal from an external source(V2 channel) Lout TV 14 This pin is for output left audio signal. Rout TV 15 This pin is for output right audio signal. Vcc 16 This is the power supply pin. Apply 9V to this pin.

3.3 N301 LA78040 Function: V-scan output

PIN FUNCTION

1 Vertical feedback 2 Vertical working power supply 3 Pump power supply 4 Ground 5 Vertical output 6 Vertical protection 7 Vertical drive signal input

3.4 N601 AN7522 Function: Audio power amplifier

Name Pin Function

Vcc 1 L Out

2，4

Sound working voltage （+12V）

Sound siqnal output Gnd 3 Ground Mute 5 Standby L In 6 Audio signal L input Gnd 7 Ground R In 8 Audio signal R input Volume 9 Sound volume DC level 1 control R Out 10,12 Sound siqnal output Gnd 11 Ground

(4) I2C Bus Control

4.1 Menu Entry

Press “D” button on the factory remote control to enter the “D” mode, the letter “D” will be displayed at the upper

right coner and the adjusting items will be displayed at the upper left conrer. Press the channel +/- to select the preferred item; press the volume +/- to adjust the value of each item.

4.2 Item introduction

TMPA8823/5VA4 BUS DATA

Comment int RCUT R CUTOFF 2C FF 20 R Cut off 00:-0.65V, 80:0V, FF:0.65V GCUT G CUTOFF 20 FF 20 G Cut off 00:-0.65V, 80:0V, FF:0.65V BCUT B CUTOFF 47 FF 20 B Cut off 00:-0.65V, 80:0V, FF:0.65V GDRV G DRIVE 3B 7F 40 G Drive Gain 00:-4.5dB, 40:0dB, 7F:3.5dB BDRV B DRIVE 37 7F 40 B Drive Gain 00:-4.5dB, 40:0dB, 7F:3.5dB CNTX SUB CONTRAST 7F 7F 7F Unicolor 00:-20dB, 40:-5dB, 7F:0dB BRTC SUB BRIGHT CEN 51 7F 50 Brightness 00:1.5V(pedestal level), 40:2.5V, COLC 2C 7F 40 Color 00:color mute, 01:-22dB or less, 7f:5.7dB TNTC SUB TINT CEN 40 7F 40

COLP PAL SUB COLOR 00 7F 00

Max

Tint: 00:-35°

40:0°, 7F:35°

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